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AN79L09
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AN79L09

Product Overview

Category

AN79L09 belongs to the category of voltage regulators.

Use

It is used to regulate and stabilize the output voltage in electronic circuits.

Characteristics

  • AN79L09 is a low-dropout voltage regulator.
  • It has a fixed output voltage of -9V.
  • The device operates with a maximum input voltage of -35V.
  • It can provide a maximum output current of 100mA.

Package

AN79L09 is available in a TO-92 package, which is a small plastic package with three leads.

Essence

The essence of AN79L09 lies in its ability to maintain a stable -9V output voltage despite fluctuations in the input voltage.

Packaging/Quantity

AN79L09 is typically sold in reels or tubes containing multiple units. The exact quantity may vary depending on the manufacturer.

Specifications

  • Input Voltage Range: -10V to -35V
  • Output Voltage: -9V (fixed)
  • Output Current: Up to 100mA
  • Dropout Voltage: 1.2V (maximum)
  • Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

AN79L09 has three pins:

  1. Input (VIN): This pin is connected to the input voltage source.
  2. Ground (GND): This pin is connected to the ground reference.
  3. Output (VOUT): This pin provides the regulated -9V output voltage.

Functional Features

  • Low dropout voltage ensures efficient regulation even with small input-output voltage differentials.
  • Built-in thermal shutdown protection prevents the device from overheating.
  • Short-circuit protection safeguards the regulator and the connected circuitry.

Advantages and Disadvantages

Advantages

  • Compact size and easy integration into various electronic circuits.
  • Stable output voltage despite input voltage fluctuations.
  • Thermal and short-circuit protection enhance reliability.

Disadvantages

  • Limited output current capacity (up to 100mA).
  • Fixed output voltage may not be suitable for all applications.

Working Principles

AN79L09 operates based on the principle of a linear voltage regulator. It uses a series pass transistor to regulate the output voltage. The device compares the output voltage with a reference voltage and adjusts the pass transistor accordingly to maintain a constant -9V output.

Detailed Application Field Plans

AN79L09 finds applications in various electronic devices and circuits, including but not limited to: - Audio amplifiers - Power supplies - Battery chargers - Industrial control systems - Automotive electronics

Detailed and Complete Alternative Models

Some alternative models that can be used as substitutes for AN79L09 include: - LM79L09 - MC79L09 - UA79L09 - L79L09

These models have similar specifications and pin configurations, making them suitable replacements for AN79L09 in many applications.

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Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de AN79L09 en soluciones técnicas

Sure! Here are 10 common questions and answers related to the application of AN79L09 in technical solutions:

  1. Q: What is AN79L09? A: AN79L09 is a voltage regulator IC that provides a fixed output voltage of -9V.

  2. Q: What is the purpose of using AN79L09 in technical solutions? A: AN79L09 is commonly used to regulate and stabilize the voltage supply in various electronic circuits or systems.

  3. Q: What is the input voltage range for AN79L09? A: The input voltage range for AN79L09 typically ranges from -11V to -35V.

  4. Q: What is the maximum output current that AN79L09 can handle? A: AN79L09 can handle a maximum output current of 100mA.

  5. Q: Can AN79L09 be used with both positive and negative input voltages? A: No, AN79L09 is designed to work with negative input voltages only.

  6. Q: How does AN79L09 regulate the output voltage? A: AN79L09 uses an internal voltage reference and feedback mechanism to maintain a stable -9V output voltage.

  7. Q: Is it necessary to use external capacitors with AN79L09? A: Yes, AN79L09 requires input and output capacitors for stability and noise reduction. Refer to the datasheet for recommended values.

  8. Q: Can AN79L09 handle high temperatures? A: AN79L09 has a specified operating temperature range, usually between -40°C to +125°C, making it suitable for most applications.

  9. Q: Can AN79L09 be used in battery-powered devices? A: Yes, AN79L09 can be used in battery-powered devices as long as the input voltage falls within its specified range.

  10. Q: Are there any alternatives to AN79L09 for voltage regulation? A: Yes, there are other voltage regulator ICs available in the market that provide similar functionality, such as LM79L09 or MC79L09.

Please note that these answers are general and may vary depending on the specific datasheet and application requirements of AN79L09.